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(No Model.) 7 2 Sheets-Sheet l. J. H. STONEMETZ.

POINT MECHANISM FOR BOOK FOLDING MACHINES.

No. 379,737. Patented Mar. 20, 1888.

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(No Model.) 2 Sheets-Sheet 2.

J. H. STONEMETZ.

POINT MECHANISM FOR BOOK FOLDING MACHINES. No. 379,737. Patented Mar. 20', 1888.

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UNTTnn STATES JOHN H. STONEMETZ, OF MILLBURY,

PATENT Grace.

MASSACHUSETTS, ASSIGNOR TO THE POINT MECHANiSM FOR BOOK-FOLDING MACHINES.

SPECIFICATION forming part of Letters Patent No. 379,737, dated March 20, 1888.

Application filed A ugnst 6, 1887.

To all whom it may concern.-

Be it known that I, J onn H. S'roNnMn'rz, a citizen of the United States, residing at Millbury, in the county of \Vorccster and State of Massachusetts, have invented certain new and useful Improvementsin Point Mechanism for Book-Folding Machines; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

My invention consists in the improvements in point mechanism for book-folding machines hereinafter described and claimed, and illus trated in the accompanying drawings, in which Figure 1 is a top or plan view of my improvement. Fig. 2 is a side elevation of same, looking in the direction of the arrow in Fig. 1. Fig. 3 is another top or plan view of my improvement. Fig. 4 is an edge view ofsame, looking in the direction of the arrow in Fig. 3. Fig. 5 shows a side elevation of the pointplate detached from the remainder of the device. Fig. 6 shows a crosssection ofsame on the line a; in Fig. 5. Fig. 7 shows a side elevation of the movable supporting-plate in which the point-plate, Fig. 5, operates. Fig. 8 shows an end elevation of same. Fig. 9 shows a hollow screw for operating the plate, Fig. 7. Fig. 10 shows the rod for operating my improved point mechanism.

Like letters refer to like parts in all of the figures.

In constructing my improvement I make a plate, A, preferablyof circular shape, of suitable size to cover an opening, B, therefor in the table 0. A ring, D, fits against the under side of the table O around the opening B therein. Screws a pass through the plate A into the ring D, by means whereof the plate A is secured in place.

In the center of the plate A, I cut a rectangular opening, E, in which opening E, I secure the sliding plate F, Figs. 7 and S, by means of tongues e e on the edges thereof fitting into grooves g 9, (shown in Fig. 4 and also Serial No. 246,350. (No model.)

in dotted lines in Figs. 1 and 3,) the plate F being thus adapted to move back and forth in the opening E in the direction shown by the arrowsffin Figs.- 1 and 3.

On the under side of the plate F are downwardly-projecting cars G and H. In the ear G, I make an opening, I, which is screw-threaded to receive and fitthe hollow screw J, which is provided at one end with collars jj, by means whereof the screw J is secured in arm K, (see Fig. 2,) which projects downwardly from the under side of the plate A, so that when the screw J is in place the screw portion thereof passes through the ear G on the slid-' ing plate F,and when rotated operates to move the plate F back and forth in the opening E, as desired. In one end of the screw J, I make a slot, j, as and for the purpose hereinafter set forth.

In the lower end of the ear H on the plate F, I make an opening, h, in which is secured a screw, L,which is provided with a small miter-gear, L, as and for the purpose hereinafter set forth.

In the center of the plate F, I cut a rectangular opening, M, in whichI secure the pointplate N, Figs. 5 and 6, by means of the tongues n n on the edges thereof fitting into grooves a n in the sides of the opening M, (see Fig. 2 and the dotted lines in Figs. 1 and 3,) the point-plate being thus adapted to move back and forth in the opening M in the direction of the arrows Z Z.

On the under side of the point-plate N, I secure an arm, 0, which projects downwardly and laterally, so as to bring the opening 0 therein in line with the screw L, which opening 0 is screw-threaded to fit the screw L, so that when the screw L is in place and is rotated it operates to move the point-plate back and forth in the opening M, as desired.

In the center of the point-plate N, I make an opening, Q, in which I secure the point-block R by means of a pintle, s, a spring, T, being placed therein, which operates to keep the 5 point T in a normally-upright position, but which allows the point to turn on the pintle s to release it from the sheet.

It will be readily seen that the screw J operates to move the plate F and the point-plate IOO supported therein in one direction, while the screw L operates to move the point-plate N at right angles to the line of movement of the plate F.

To operate the screws'J and L, I make a rod, U, Fig. 10, which is provided with a pin, it, therein adapted to fit into the slotj in the end of the screw J and turn the same, as shown in Fig. 1, while the end a of the rod U is of suitable size to pass through the hollow screw J, which forms a bearing therefor. Upon the rod U, near the pin to, I secure a miter-gear, L adapted to fit and intermesh with the miter-gear L on the screw L, as shown in Figs.

3 and 4. From the hollow screw J, which forms a bearing for the end a of the rod U, the rod U passes through a lug, V, secured to the under side of the plate A, which forms another hearing therefor, from whence the rod U ex tends to and a little beyond the edge of the table, whereit terminatesinaknob,W,adapted for turning the same.

rection the operator draws the rod U out, so

as to bring the miter-gears L and L into mesh,

asshown in Fig. 3, then by again turning the rod U rotates the screw L, thereby moving the point-plate N back and forth in the direction of the arrows Z Z. Thus it will be seen that by means of this mechanism the point T can be quickly adjusted to any desired position. It

will also be seen that the entire point mech-.

anism is secured to the table. so that when the table is removed from the machine the entire point mechanism goes with it.

In the drawings I have shown a plate A having the point mechanism therein and means for securing it over an opening, B, in the table 0. However, if desired, I can make the opening E directly in the table itself and grooves in the sides of the opening to receive the plate .F with equal facility; but I prefer the construction shown in the drawings.

Having thus fully described my invention, so as to enable others to construct and operate the same, what I claim as new, and desire to secure by Letters Patent of the United States,

1. The combination,in thepointplate-actuating mechanism of a book-folding machine, of one screw having a miter-gear thereon and another hollow screw havinga slot or groove in the end thereof, by means whereof each of said plates can be moved, with a single shaft having a miter-gear andstud-pins thereon and adapted to be moved longitudinally to engage with and actuate both of said screws one at a time, substantially as and for the purpos set forth.

2. Thecombination,inthepoint-plate mechanism ofa book-folding machine, of two actuating-screws, one of which is adapted to move one of the plates to and fro in the table-top and the other to move another plate mounted in the first-named plate at right angles to the movement of the first-named plate, with asingle screw-actuating shaft adapted to be moved so as to engage alternately with each of said screws, substantially as and for the purpose set forth.

3. The combination,in the point mechanism of a book-folding machine, of the hollow screw J, mounted in the bearing K. and passing through the ear G on the plate F,and the screw L, and the miter-gear L thereon mounted in the ear H on the plate F, and passing through the arm 0 on the point-plate N, and the rod U, having thereon the pin a, and the mitergear L substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN H. STONEMETZ.

Witnesses:

J. D. CLARK, G. W. CUNNINGHAM. 

